Has Sandy Hook tragedy changed America's gun debate 1 year later?

Sandy Hook was supposed to be a game-changer in the national gun control debate.

After 20 children and six educators were gunned down at the elementary school in Newtown, Conn., last year, Americans’ support for federal gun control laws surged in polls, President Barack Obama threw his weight behind the issue with a task force and U.S. Senate leaders from both parties took up major legislation.

But a bill to expand background checks failed in the Senate, Obama’s priorities turned to other topics and polls soon leveled out. Many states even went in the opposite direction and passed laws expanding gun rights. Pictures: